31660214160 has 160 divisors (see below), whose sum is σ = 99317357568. Its totient is φ = 8342392320.

The previous prime is 31660214153. The next prime is 31660214203. The reversal of 31660214160 is 6141206613.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14113999 + ... + 14116241.

Almost surely, 2^31660214160 is an apocalyptic number.

31660214160 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31660214160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49658678784).

31660214160 is an abundant number, since it is smaller than the sum of its proper divisors (67657143408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31660214160 is a wasteful number, since it uses less digits than its factorization.

31660214160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933 (or 2927 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 31660214160 in words is "thirty-one billion, six hundred sixty million, two hundred fourteen thousand, one hundred sixty".